Construction Product Data Sheet Edition 14/08/2017 Identification no: 020703020030000002 Sikadur -Combiflex CF Adhesive Sikadur -Combiflex CF Adhesive 2-part epoxy adhesive Part of the Sikadur -Combiflex System Product Description Sikadur -Combiflex CF Adhesive are thixotropic two part adhesives based on epoxy resins and fillers. The Sikadur-Combiflex CF Adhesive are part of the Sikadur -Combiflex System and used to glue the Sikadur -Combiflex Tape or the Sikadur -Hypalon Strip to different substrates. Type N (= Normal Potlife) is used for temperatures between +10 C to +30 C. Type R (= Rapid Potlife) is used for temperatures between +5 C to +15 C. Uses Characteristics / Advantages As adhesive for: Sikadur -Combiflex System As a structural adhesive for: Concrete Masonry and Bricks Steel Hard natural stone Easy to mix and apply Excellent adhesion to many materials Styrene and nonylphenol free Performs well within a wide temperature range Completely weather and water resistant Root resistant Good resistance to many chemicals Available with normal or rapid hardening grade adhesive No primer needed High mechanical resistance Good abrasion resistance Tests Approval / Standards Testing according to EN 1504-4. 1 Sikadur -Combiflex CF Adhesive 1/1
Product Data Form Colours Part A: White Part B: Dark grey Part A+B mixed: Light grey Packaging Pallets of 600 kg (20 x 20 kg Part A and 20 x 10 kg Part B) Storage Not pre-dosed industrial packaging: Part A: 20 kg pails Part B: 10 kg pails Storage Conditions / Shelf Life 24 months from date of production if stored properly in unopened undamaged and sealed original packaging in dry conditions at temperatures between +5 C and +30 C. Technical Data Chemical Base Modified, solvent free, filled 2-part epoxy resin. Density ~ 1.5 kg/l part A (at +23 C) ~ 1.5 kg/l part B Type N (at +23 C) ~ 1.6 kg/l part B Type R (at +23 C) ~ 1.5 kg/l part A+B mixed (at +23 C) Thermal Expansion Coefficient Service Temperature Mechanical / Physical Properties Linear expansion (1 / C) Type Normal: 5.3 x 10-5 ( 0.2 x 10-5 ) at -20 C to +40 C (EN ISO 1770) Type Rapid: 4.5 x 10-5 ( 0.2 x 10-5 ) at -20 C to +40 C -30 C to +60 C Compressive Strength (ASTM D 695-96) Type Normal Curing time +10 C +23 C +30 C 3 days ~ 35 N/mm 2 ~ 48 N/mm 2 ~ 52 N/mm 2 7 days ~ 41 N/mm 2 ~ 50 N/mm 2 ~ 54 N/mm 2 14 days ~ 43 N/mm 2 ~ 54 N/mm 2 ~ 55 N/mm 2 Type Rapid Curing time +5 C +10 C +15 C 3 days ~ 26 N/mm 2 ~ 34 N/mm 2 ~ 45 N/mm 2 7 days ~ 39 N/mm 2 ~ 43 N/mm 2 ~ 53 N/mm 2 14 days ~ 41 N/mm 2 ~ 50 N/mm 2 ~ 55 N/mm 2 Bond Strength (DafSt-Richtlinie, Part 3) Substrate Bond strength Concrete (dry) > 4 N/mm 2 (failure in concrete) Concrete (mat moist / damp) > 4 N/mm 2 (failure in concrete) Steel (blastcleaned) > 10 N/mm 2 2 Sikadur -Combiflex CF Adhesive 2/2
E-Modulus (ASTM D 695) Temperature E-Modulus (compressive) +5 C ~ 4'200 N/mm 2 +23 C ~ 3'500 N/mm 2 Resistance Chemical Resistance System Information System Structure Application Details Consumption Substrate Quality Substrate Preparation Concrete, stone, mortar, rendering: Substrate must be clean, free from oil, grease, laitance or loose particles. Age of concrete 3-6 weeks dependent on environmental conditions. Construction Steel 37: Clean, free from oil, grease, rust and scale. Concrete, stone, mortar, rendering: Blastcleaning or equivalent mechanical means followed by thorough vacuum/dust removal. Construction Steel 37: Blastcleaning or equivalent mechanical means followed by thorough vacuum/dust removal. Avoid dew point conditions for application. Application Conditions / Limitations Substrate Temperature Type Normal: +10 C to +30 C Ambient Temperature Type Normal: +10 C to +30 C Material Temperature Type Normal: +10 C to +30 C Substrate Moisture Content Dew Point Cementitious substrates: Substrate must be dry or mat damp (no standing water) Brush the adhesive well into the substrate Beware of condensation! Ambient temperature during application must be at least +3 C above dew point. 3 Sikadur -Combiflex CF Adhesive 3/3
Application Instructions Mixing Part A : B = 2 : 1 parts by weight or volume Pre-batched units: Mix parts A+B together for at least 3 minutes with a mixing spindle attached to a slow speed electric drill (max. 300 rpm) until the material becomes smooth in consistency and a uniform grey colour. Avoid aeration while mixing. Then, pour the whole mix into a clean container and stir again for approx. 1 more minute at low speed to keep air entrapment at a minimum. Mix only that quantity which can be used within its potlife. Bulk packing, not pre-batched: First, stir each part thoroughly. Add the parts in the correct proportions into a suitable mixing pail and stir correctly using an electric low speed mixer as above for pre-batched units. Application Method / Tools Cleaning of Tools Potlife Clean all tools and application equipment with Sika Colma-Cleaner immediately after use. Hardened / cured material can only be mechanically removed. Potlife Temperature Type Normal (6 kg) Type Rapid (6 kg) +5 C - ~ 65 minutes +10 C ~ 125 minutes ~ 45 minutes +15 C ~ 95 minutes ~ 25 minutes +23 C ~ 50 minutes - +30 C ~ 25 minutes - If larger quantities are being mixed the temperature of Sikadur -Combiflex CF Adhesive will increase due to the chemical reaction, resulting in a reduced potlife. Open time: Type Normal: Type Rapid: Scratch resistance: ~ 70 minutes at +23 C ~ 65 minutes at +10 C Temperature Type Normal Type Rapid +5 C - ~ 16 hours +10 C ~ 14 hours ~ 11 hours +15 C ~ 10 hours ~ 7 hours +23 C ~ 8 hours - +30 C ~ 6 hours - Waiting Time / Overcoating Notes on Application / Limitations Sikadur -Combiflex CF Adhesive may be overcoated with an epoxy coating. In this event do not smooth the adhesive with detergent. If waiting time between application of adhesive and overcoating is to be longer than 2 days, the adhesive must be blinded to excess with quartz sand immediately after application. 4 Sikadur -Combiflex CF Adhesive 4/4
Construction Value Base All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control. Local Restrictions Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields. Health and Safety Information Legal Notes For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data. The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product s suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. SIKA LIMITED Head Office Watchmead Welwyn Garden City Hertfordshire AL7 1BQ United Kingdom Phone: +44 1 707 394444 Fax: +44 1 707 329129 www.sika.co.uk 5 Sikadur -Combiflex CF Adhesive 5/5